Integrated thermal cycling system of electric vehicle

Abstract

The invention relates to the field of heat management of electric vehicles, and in particular to an integrated thermal cycling system of an electric vehicle. The integrated thermal cycling system of the electric vehicle comprises a motor system heat dissipation device, a motor, a motor controller, an air-conditioning system, a first water pump, an air heater, a water cooling jacket, a battery pack, a heater, a battery pack heat dissipation device, a second water pump, a heat exchanger and an evaporator; and a refrigerant pipeline and a water pipeline are connected onto the heat exchanger, the water cooling jacket is installed on the battery pack, and the motor system heat dissipation device, the first water pump, the motor controller and a motor are sequentially and circularly connected with each other according to the circulating water flowing direction, so that a motor cooling cycling circuit is formed. When the environment temperature is low, the battery pack is preheated and heated and an air conditioner in the vehicle is warmed up before the electric vehicle is started, when the environment temperature is high, the battery pack is cooled, a cab is refrigerated and the motor and the motor controller are cooled, accordingly, high requirements on the self operating temperatures of the motor system and a battery are satisfied, so that the service lives and efficiency of the motor system and the battery are increased.

Description

technical field [0001] The invention relates to the field of thermal management of electric vehicles, in particular to a thermal cycle system of electric vehicles. Background technique [0002] At present, the air-conditioning system, power battery thermal management system, and motor system thermal management system of electric vehicles on the market are generally independent, and few of them have integrated the heat dissipation and heating system of the battery pack, the air-conditioning refrigeration system, the heating system, and the cooling of the motor. The systems are integrated together, which results in low efficiency of the vehicle thermal management system and fails to achieve the maximum utilization rate of the vehicle thermal environment resources. And the power battery generally adopts a simple air-cooled system, and rarely uses a water-cooled system. In this way, in a hot or cold environment, it is difficult to guarantee the optimal working temperature of the...

AI Technical Summary

Problems solved by technology

[0002] At present, the air-conditioning system, power battery thermal management system, and motor system thermal management system of electric vehicles on the market are generally independent, and there are few systems that integrate the heat dissipation and heating system of the battery pack, the air-conditioning refrigeration system, the heating system, and the cooling of the motor. The systems are integrated together, which results in low efficiency of the vehicle thermal management system and fails to achieve the maximum utilization rate of the vehicle thermal environment resources

And the power battery generally adopts a simple air-cooled system, and rarely uses a water-cooled system. In this way, in a hot or cold environment, it is difficult to guarantee the optimal working temperature of the power battery, and it is also impossible to ensure the consistency of the temperature between the batteries, thereby reducing the battery life. life and charge-discharge performance

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